Rotary expansible chamber devices – Heat exchange or non-working fluid lubricating or sealing – Intermixed incoming working and non-working fluids
Patent
1994-12-21
1996-05-21
Freay, Charles
Rotary expansible chamber devices
Heat exchange or non-working fluid lubricating or sealing
Intermixed incoming working and non-working fluids
418 60, 418212, F01C 2104
Patent
active
055183816
ABSTRACT:
A closed rotary compressor includes a generally cylindrical sealed vessel having an oil sump defined therein for accommodating a quantity of lubricating oil, a drive unit housed within the sealed vessel and having a drive motor and a shaft driven by the drive motor, and a compressor mechanism housed within the sealed vessel. The compressor mechanism is provided with at least one set of compression elements. This set of compression elements is made up of a cylinder having a compression compartment and a refrigerant intake port both defined therein in communication with each other, first and second bearings secured to the lower and upper end surfaces of the cylinder, respectively, for rotatably supporting the shaft, a crank provided on the shaft for rotation together therewith, a ring-shaped roller encircling the crank and capable of undergoing a planetary motion in contact with the crank during rotation of the crank, and a radial vane slidably accommodated in the cylinder for reciprocating movement in a direction radially of the cylinder. The radial vane has a radial inner end held in sliding contact with an outer peripheral surface of the ring-shaped roller, to thereby divide the compression compartment into a suction chamber and a compression chamber. An oil passage is provided in the compressor mechanism to place the oil sump in communication with the refrigerant intake port. The oil passage has a throttled portion at a location adjacent to the refrigerant intake port.
REFERENCES:
patent: 5181414 (1993-01-01), Baret et al.
patent: 5322424 (1994-06-01), Fujio
Fujiwara Shinji
Fukuoka Hirotsugu
Matsunaga Hiroshi
Morita Keisuke
Sano Yasuhiko
Freay Charles
Matsushita Electric - Industrial Co., Ltd.
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